Stampiwgumill for crushing quartz



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Ore Crusher. y N. 30.821. Patented Dec. 4 1860.

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SAMUEL F. HODGE, OF DETROIT, MICHIGAN.v

STAMPINGf-.MILL FOR CRUSHING QUARTZ.

To all whom it may concern:

Be it known that I, SAMUEL F. HoDGn, of Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Ore Crushing or Stamping Mills; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a side elevation of my invention; Fig. 2, an end elevation of the same; Fig. 3, a. plan or top view of thc same; Fig. t, a horizontal section of the mortar of the same, t-aken in the line C, D, Fig. 5. Fig. 5, a vertical section of the mortar taken in the line A, B, Fig. 2. Fig. 6, a detached side view of the lifting device.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to a novel and improved means employed for elevating the plunger or pestle and liberating the same at the desired point, substantially as hereinafter fully shown and described, whereby a rising and falling movement is given the plunger or pestle with a moderate application of power, and without any undue friction and consequent wear and tear of the working parts.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, A, are two uprights, which are connected at their upper ends, by a cross bar B, and connected at about their centers by a cross bar C. These cross bars B, C, form guides for a plunger or pestle rod D, which has a wedge or V-shaped frame E, secured to its upper part. This wedge or V-shaped frame E, is shown clearly in Figs. 1, and 6. By referring to these figures it will be seen, that its point or smaller end, is downward and that it is placed centrally on the rod D.

The uprights'A, A, are each provided with two horizontal arms E, E, projecting from opposite sides, in the same horizontal plane. On these arms are the bearings c.,

of shafts F, F. These shafts are parallel with each other and are connected at one end by toothed wheels G, Gr.

On each shaft F, there is placed an ec- The eccentricty of the centric or cam H.

cams H, that is to say, their departure from circles correspond precisely with the taper or Obliquity of the wedge or V-shaped frame E, so that as the cams H, H, rotate, their peripheries will at all points of their rotation be in contact with the sides of the wedge or V-shaped frame E, the increasing radii of the cams corresponding with the diminishing width of the wedge or V-shaped frame E. By this arrangement it will be seen that by rot-ating one of the shafts F, a reciprocating or rising and falling movement will be given the rod D, the cams H, H, elevating the rod in consequence of acting against the wedge or frame E, and the rod falling by virtue of its own gravity when the prominences of the cams have passed the sides ofthe wedge or frame E. The latter being provided with projections b, for the cams to catch against and commence their action on the wedge or frame, see Fig. 6.

The pestle I, which is at the lower end of the rod D, works in a mortar J, of quadrilateral form. This mortar has inserted in each side of it an inclined screen K. These screens are formed of parallelV rods c, placed in proper frames or in the sides of the mortar and inclined at an angle of about 2Q-f, see Fig. 5.

The pulp or pulverized rock is forced through the screens K, by the action of the pestle I, and a stream of water which is admitted into the top ofthe mortar. The pestle I, performs therefore a double function; to wit, the crushing or breaking of the ore and the forcing of it through the screens.

I am aware that stampers have previously been operated by cams and tappets of various forms in connection with collars or arms upon the stamper shafts and also that rollers whose peripheries are not complete circles have been used to elevate straight stamper shafts by friction.

Ther peculiar construction and combination of parts which I have above described present the following practical advantages: Friction is not depended upon to elevate the stamper shaft. The first impact between the segments H, and the stamper shaft is at a point in the former which is moving slowly and by reason of the wedge CJi or V form of the frame and the eccentricity of the segments the shaft is elevated sestamper shaft D, the Whole beingx cnstructed substantially as and for the pur- SALML. F. HODGE.

Witnesses:

GEORGE N. BRADY, ISAAC Gr. GRAFF. 

